Setting TX power for multiple advertising sets

[Bilal]

Hi, is it possible to set the BLE TX power individually for different advertising sets when multiple advertising sets are being used?

I am currently using the "hci_pwr_ctrl" sample project to read and write the BLE TX power but I am not sure how I can (or if it is even possible to) change the TX power and have set to different levels for different advertising sets.

I have a beaconing set that I want to have at a different level and a connectable adv set that should be at a different level.

Any suggestions? 

Thanks

[Susheel Nuguru]

Syuji,

Have you seen this Vendor specific HCI API?

This API does not allow to set different power for extended and periodic advertising. The periodic advertiser and extended advertiser use the same advertising handle but you can use it on two advertising sets like the one you have iBeacon which uses legacy advertising set and the periodic advertising that uses extended advertising set.

Can you see if that is useful in your case?

[loquat]

yes.
I know it
Therefore, I would like you to be able to set TxPower for each AdvertiseSet in the future.

[Susheel Nuguru]

Setting TX power using the HCI command for each advertising set should be supported already.

You cannot use this for setting different power for primary channel, auxiliary channel, periodic advertising, and BIS events as they belong to same advertising set and hence the same advertising handle.

But you can use this HCI API to set different TX power for legacy (iBeacon) and periodic advertising which are two different advertisings sets, like in your case. Hence this provided API is helpful to what you are requesting.

[loquat]

Really?

Should I set bt_le_ext_adv.handle to bt_hci_cp_vs_write_tx_power_level.handle?

[Susheel Nuguru]

Can you double check (print the value) if the handle value for bt_le_ext_adv.handle and iBeacon adv handle are different.

Our experts think it should be, in which case you can set it as you suggested.

[loquat]

ok

I try it. thank you.

[Susheel Nuguru]

No problem, I hope it works.